volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Injectors For Leaks and Quanity Injected, Checking|Page 4943 > < Fuel Injectors For Leaks and Quanity Injected, Checking|Page 4941
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Fuel Injector: Testing and Inspection
Fuel Injectors, Checking

With Manufacturer's Scan Tool

Fuel Injectors, Checking

Special tools, test equipment and auxiliary items

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Test box V.A.G 1598/31

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Multimeter (Fluke 83 or equivalent)

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Diode test lamp V.A.G 1527

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Adapter set V.A.G 1594

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Wiring diagram 

Check conditions

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Fuses 28 and 32 must be OK

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Engine speed sensor must be OK, checking  See: Computers and Control Systems/Testing and Inspection/Component Tests and General
Diagnostics/Engine Speed (RPM) Sensor, Checking

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The battery voltage must be at least 11.5 V

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Fuel pump relay must be OK

Checking resistance of injectors

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Pull connectors off injectors.

Fuel Injectors For Leaks and Quanity Injected, Checking|Page 4943 > < Fuel Injectors For Leaks and Quanity Injected, Checking|Page 4941